Power mechanism for compression type fluid pump and compression type fluid pump

Abstract

The utility model belongs to the technical field of fluid pumps, in particular to a power mechanism for a compression type fluid pump and the compression type fluid pump, which comprises a variable container and a reciprocating driving mechanism, the variable container can be connected in a conveying channel for conveying fluid unidirectionally in a penetrating manner, and the reciprocating driving mechanism is used for driving the variable container to deform. The oil-free hydraulic cylinder can operate efficiently for a long time, saves energy due to no piston friction, is free of pollution emission, is lower in noise, and has the advantages of being long in service life and capable of adapting to various environments, especially oil-free environments to work.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid pump technical field, concretely is power mechanism and compression type fluid pump for compression type fluid pump. BACKGROUND

[0002] The compression fluid pump, short for compression pump, works by sucking fluid from the inlet, reducing its volume through compression, and discharging high-pressure fluid. Main types include: piston compression pump, vane compression pump, etc. With the continuous development of the global economy and the rise of emerging markets, the demand for compression pumps will continue to grow. Especially in the energy, petrochemical, construction and other fields, with the continuous progress of technology and the expansion of market size, the application of compression pumps will be more widely.

[0003] The piston compression pump in it reciprocates in the container to make the working volume in the container change periodically, thereby realizing the suction, compression and discharge of fluid. However, the piston compression pump in actual use needs to maintain the reciprocating motion of the piston to realize the delivery of fluid, which will generate a lot of friction and wear, and also generate friction noise, so it has gradually become unable to adapt to more intense competition.

[0004] In order to make the compression fluid pump better cope with more intense competition, the present application provides a power mechanism for compression type fluid pump and compression type fluid pump which is widely used and has more advantages in low pollution and energy saving performance. UTILITY MODEL CONTENT

[0005] In view of the shortcomings of the prior art, the utility model provides a power mechanism for compression type fluid pump, which solves the problem of a large amount of friction, wear and noise generated during the operation of the existing piston compression pump.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a power mechanism for compression type fluid pump, comprising a variable container that can be connected through a delivery channel for one-way delivery of fluid, and a reciprocating drive mechanism for driving the variable container to deform.

[0007] Preferably, the variable container is a whole deformable bag structure.

[0008] Preferably, the radial section of the bag structure is wavy on both sides, and the travel direction of the variable container when deformed is linear.

[0009] Preferably, the surface of the variable container is provided with an opening for through connection with the delivery channel, and further comprises a sealing structure for sealing connection between the opening and the delivery channel.

[0010] Preferably, the reciprocating drive mechanism comprises an eccentric wheel and a push rod rotatably connected to the eccentric wheel, and the other end of the push rod is rotatably connected to the other end of the variable container.

[0011] Preferably, the reciprocating drive mechanism further comprises a retaining sleeve arranged outside the variable container, and the retaining sleeve is provided with a connecting structure fixed to the delivery channel.

[0012] To achieve the above object, the utility model provides technical schemes as follows: a compression type fluid pump, including the power mechanism, further including a flange disc with a through hole, the flange disc is detachably connected with the opening through a sealing structure, the sealing structure is in the form of a perforated plate, the other end of the flange disc is provided with a cover body, the cover body and the flange disc are assembled to realize the through connection in the delivery channel.

[0013] Preferably, two single holes are arranged in the flange disc and the sealing structure to form two passages between the flange disc and the sealing structure.

[0014] Preferably, one single hole is arranged in the flange disc and the sealing structure to form one passage between the flange disc and the sealing structure, the variable container is further provided with a first delivery port for the fluid to pass through, the cover body is provided with a second delivery port, and the first delivery port and the second delivery port are used to connect the delivery channel.

[0015] Preferably, two one-way valves are arranged between the first delivery port and the second delivery port.

[0016] Compared with the prior art, the utility model provides a power mechanism for a compression type fluid pump, which has the following beneficial effects:

[0017] The power mechanism for the compression type fluid pump can maintain high efficiency for a long time, saves energy, has no pollution emission and lower noise, has a long service life, and can work in various environments, especially in oil-free environments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural front view of the power mechanism for the compression type fluid pump.

[0019] Figure 2 It is a connection diagram of the variable container and the delivery channel in the power mechanism for the compression type fluid pump.

[0020] Figure 3 It is a structural diagram of the retaining sleeve in the power mechanism for the compression type fluid pump.

[0021] Figure 4 It is a structural diagram of the third embodiment of the power mechanism for the compression type fluid pump.

[0022] Figure 5 Structure diagram of a fourth embodiment of a power mechanism for a compression fluid pump;

[0023] Figure 6 Structure diagram of a fourth embodiment of a power mechanism for a compression fluid pump.

[0024] In the drawings:

[0025] A, delivery channel;

[0026] 1, variable container; 11, opening; 12, sealing structure; 13, first delivery port;

[0027] 2, reciprocating drive mechanism; 21, eccentric wheel; 22, push rod; 23, retaining sleeve;

[0028] 3, flange plate;

[0029] 4, cover; 41, second delivery port;

[0030] 5, passage;

[0031] 6, one-way valve. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0033] Embodiment 1:

[0034] Please refer to Figures 1-3 The present application provides the following technical solutions:

[0035] A power mechanism for a compression fluid pump, comprising a variable container 1 which is connected through a delivery channel A for unidirectional delivery of fluid, and a reciprocating drive mechanism 2 for driving the variable container 1 to deform.

[0036] As an optional embodiment of the utility model, for the delivery channel A for one-way delivery of fluid, it should be understood that the delivery channel A can only deliver fluid in one direction, specifically that the delivery channel A has a component for controlling the one-way flow of fluid at the inlet end and the outlet end, such as a one-way valve 6, or a pump body with a one-way valve 6 at both ends in a diaphragm pump, while the delivery channel A itself can be integrated, such as the delivery channel A in a diaphragm pump, or two independent delivery pipes. Of course, these methods are all prior art solutions and are not included in the protection scope of the present embodiment, and the present embodiment aims to provide a power mechanism that can be used in these delivery channels A that can deliver fluid in one direction.

[0037] Before use, the delivery channel A and the reciprocating drive mechanism 2 are fixed in position to ensure that the variable volume function of the variable container 1 is effective. When the reciprocating drive mechanism 2 is running, the variable container 1 begins to deform, and when the volume of the variable container 1 decreases, the internal pressure of the variable container 1 increases, which causes the one-way valve 6 at the outlet end of the delivery channel A to switch to an open state, which allows the fluid inside the variable container 1 to flow out of the outlet end; when the internal pressure of the variable container 1 decreases, or the reciprocating drive mechanism 2 stops running, runs in reverse, and causes the volume of the variable container 1 to remain unchanged or increase, the outlet end switches to a closed state, and the fluid cannot flow out of the delivery channel A; when the reciprocating drive mechanism 2 runs in the opposite direction, the volume of the variable container 1 increases, and at this time the inlet end and the outlet end of the delivery channel A are both in a closed state, which causes the internal pressure of the variable container 1 to be negative, which causes the one-way valve 6 at the inlet end to switch to an open state, allowing fluid to enter the variable container 1; when the pressure in the variable container 1 increases, or the reciprocating drive mechanism 2 stops running, runs in the positive direction, and causes the volume of the variable container 1 to remain unchanged or decrease, the inlet end switches to a closed state. Thus, by reciprocating the reciprocating drive mechanism 2, the volume of the variable container 1 can be switched between increasing and decreasing, allowing fluid to flow from the delivery channel A.

[0038] The variable container 1 is made of soft material, such as some polymer materials, or is composed of multiple components connected flexibly. According to the common sense of sound generation and sound transmission, hard materials are more likely to transmit vibration (i.e. sound), while soft materials or flexible connections can reduce vibration due to their elastic damping and / or porous structure, or convert sound energy into heat energy due to the viscous resistance of air and the vibration friction between air and the hole wall. Therefore, the variable container 1 itself has the function of noise reduction. Compared with the traditional plunger type fluid pump, the noise pollution problem can be significantly reduced because there is no friction condition. Since the inlet and outlet rely only on the variable container 1 for communication, the fluid delivery process will not contact the external environment, which makes the fluid to be delivered not to be contaminated, and the friction and wear only exist on the outside of the fluid. Therefore, it does not need oil and other easily contaminated environmental media to transmit power, so it is more reliable for some applications in oil-free environments (such as fluid delivery in the medical field), and there is no pollution emission. It is more convenient to maintain.

[0039] For the reciprocating drive mechanism 2, since the reciprocating drive mechanism 2 is located outside the fluid delivery, it is easier to implement noise isolation measures. According to noise analysis, the noise source of the piston type compression pump mainly comes from the friction of the piston, as well as the turbulent flow and vortex flow generated when the fluid moves. The whole technical solution does not have a piston, so only the external reciprocating drive mechanism 2 needs to be isolated. Compared with the traditional plunger type compression pump, it is obviously more difficult to implement noise isolation measures inside the pump body, so the technical solution is actually more convenient for noise isolation measures.

[0040] It is worth noting that the above-mentioned variable container 1 only refers to the container whose volume can change due to the change of its shape. Any container with this property, such as the subsequent capsule structure, or the container composed of multiple components connected flexibly, should be considered within the protection scope of the variable container 1. In addition, for the reciprocating drive mechanism 2, any mechanism that drives the shape of the variable container 1 to change reciprocally can be implemented, such as the subsequent motor and eccentric wheel 21, or the existing reciprocating motion mechanism such as electric push rod 22, even the electromagnetic iron with switchable magnetic poles, and the way of clamping the variable container 1 from the side. The position of the reciprocating drive mechanism 2 acting on the variable container 1 is not limited, and it can be adjusted according to the actual situation and the implementation conditions of the specific site.

[0041] Through the above structure, high efficiency can be maintained for a long time, energy is saved due to no piston friction, no pollution emission, lower noise, long service life, and the characteristics of being suitable for working in various environments, especially in oil-free environment.

[0042] As shown in Figure 1 , the variable container 1 is a whole deformable bag structure.

[0043] As an optional embodiment of the utility model, the bag structure can be specifically in the form of no fixed shape, such as air bag, or in the form of regular shape and having fixed stroke direction, and the technical scheme is not limited specifically. Compared with the locally deformable mode, the whole deformable mode has higher fluid delivery efficiency due to larger pressure change value.

[0044] As shown in Figures 1-2 , the bag structure is in the form of wave shape on both sides of the radial section, and the stroke direction of the variable container 1 during deformation is in the form of straight line.

[0045] As an optional embodiment of the utility model, the wave-shaped bag structure can refer to the manually pressable water outlet on the barrel water. The advantage of this mode is that the effective stroke of the reciprocating driving mechanism 2 driving the variable container 1 to deform reaches the maximum, so the working efficiency is also the highest.

[0046] As shown in Figure 6 and Figure 2 , the surface of the variable container 1 is provided with an opening 11 for through connection with the conveying channel A, and further comprises a sealing structure 12 for sealing connection of the opening 11 and the conveying channel A.

[0047] As an optional embodiment of the utility model, during installation, the sealing structure 12 is from the inside of the variable container 1, and the edge of the opening 11 is clamped to realize through connection with the conveying channel A, so as to ensure that the pressure change during deformation of the variable container 1 is stable, and the fluid to be conveyed cannot leak.

[0048] As shown in Figure 1 , the reciprocating driving mechanism 2 comprises an eccentric wheel 21 and a push rod 22 rotatably connected to the eccentric wheel 21, and the other end of the push rod 22 is rotatably connected to the other end of the variable container 1.

[0049] As an optional embodiment of the utility model, when the reciprocating driving mechanism 2 operates, the motor drives the eccentric wheel 21 to rotate, thereby driving the push rod 22 to rotate on the eccentric wheel 21, thereby pushing one end of the variable container 1, realizing the linear deformation of the variable container 1, and with the rotation of the motor, the stroke of the push rod 22 is reciprocating, so that the deformation of the variable container 1 is reciprocating. For this embodiment, the structure is relatively simple, and each rotating connection can be realized by a common bearing, so that the reciprocating movement of the push rod 22 itself has the advantages of less friction and low noise, and the entire reciprocating driving mechanism 2 is independent of the variable container 1 and the conveying channel A, so that the noise isolation measures are easy to implement, and maintenance and repair are also convenient.

[0050] As shown in Figure 3 , the reciprocating driving mechanism 2 further comprises a retaining sleeve 23 arranged outside the variable container 1, and the retaining sleeve 23 is provided with a connecting structure which can be fixed with the conveying channel A.

[0051] As an optional embodiment of the utility model, the connecting structure can be a flange or welding, etc. The installation of the retaining sleeve 23 outside the variable container 1 does not mean that it must be in contact or not in contact with the variable container 1, both ways can be used, mainly to better limit the above-mentioned linear reciprocating movement of the variable container 1, and avoid large deviation to reduce the conveying efficiency.

[0052] Embodiment 2:

[0053] Please refer to Figure 2 , the utility model also provides the following technical scheme:

[0054] The compression type fluid pump comprises the power mechanism in embodiment 1, further comprises a flange plate 3 with a through hole, the flange plate 3 is detachably connected with the opening 11 through the sealing structure 12, the sealing structure 12 is in the form of a perforated plate, the other end of the flange plate 3 is provided with a cover body 4, and the cover body 4 is connected in the conveying channel A after being assembled with the flange plate 3.

[0055] As an optional embodiment of the utility model, the fluid is connected with the variable container 1 through the hole on the flange plate 3 and the sealing structure 12, thereby realizing the connection with the conveying channel A. This mode is more suitable for the mode in which only one pipeline is used as the conveying channel A, for example, a diaphragm pump.

[0056] Embodiment 3:

[0057] Please refer to Figure 4 , the utility model also provides the following technical scheme:

[0058] The compression fluid pump includes the power mechanism in Embodiment 1, and also includes a flange 3 with a through hole. The flange 3 is detachably connected to the opening 11 through a sealing structure 12. The sealing structure 12 is in the shape of a perforated plate. Both the flange 3 and the sealing structure 12 are provided with two single holes so that there are two passages 5 between the flange 3 and the sealing structure 12, and each passage 5 is provided with a one-way valve 6.

[0059] As an optional implementation of this utility model, since the variable container 1 and the reciprocating drive mechanism 2 are components with a certain volume and floor space, in some cases, the conveying channel A can only be configured at one end of the variable container 1, and there are cases where the conveying channels A are independent of each other. Therefore, adopting this technical solution can better cope with the actual situation.

[0060] Example 4:

[0061] Compared to Example 2, the difference is:

[0062] like Figures 5-6 As shown, both the flange 3 and the sealing structure 12 are provided with a single hole, so that there is a passage 5 between the flange 3 and the sealing structure 12. The variable container is also provided with a first conveying port 13 for fluid to pass through, and the cover 4 is provided with a second conveying port 41. The first conveying port 13 and the second conveying port 41 are used together to connect the conveying channel A. It also includes two one-way valves 6, which are respectively located between the first conveying port 13 and the second conveying port 41.

[0063] As an optional implementation of this utility model, in some cases, the conveying channel A consists of two independent pipes, and neither pipe can be designed at the same end of the variable container 1. Therefore, the conveying channel A can be directly installed on the first conveying port 13 and the second conveying port 41 respectively, thereby realizing unidirectional fluid supply. In addition, the actual position of the one-way valve 6 can be located on the first conveying port 13 and the second conveying port 41, or on the first conveying port 13, the sealing structure 12, the flange 3, or the second conveying port 41. In short, it must be at both ends of the variable container 1 to ensure that the pressure generated when the variable container 1 deforms can act on the fluid conveying process.

[0064] The working principle and use process of the utility model are as follows: before use, the position of the conveying channel A and the reciprocating driving mechanism 2 is fixed to ensure that the variable volume function of the variable container 1 is effective. When the reciprocating driving mechanism 2 is running, the variable container 1 starts to deform, when the volume of the variable container 1 is reduced, the pressure inside the variable container 1 is increased, which makes the one-way valve 6 at the output end of the conveying channel A switch to the through state, which makes the fluid inside the variable container 1 flow out of the output end; when the pressure inside the variable container 1 is reduced, or the reciprocating driving mechanism 2 stops running, reversely runs to make the volume of the variable container 1 unchanged, increased, the output end switches to the closed state, and the fluid cannot flow out of the conveying channel A; when the reciprocating driving mechanism 2 runs in the opposite way, the volume of the variable container 1 is increased, and at this time, the inlet end and the output end in the conveying channel A are in the closed state, which makes the pressure inside the variable container 1 be negative pressure, which makes the one-way valve 6 in the inlet end switch to the through state, so that the fluid can enter the variable container 1, when the pressure in the variable container 1 is increased, or the reciprocating driving mechanism 2 stops running, positively runs to make the volume of the variable container 1 unchanged, reduced, the inlet end switches to the closed state. Therefore, through the reciprocating running of the reciprocating driving mechanism 2, the volume of the variable container 1 is switched back and forth between increasing and reducing, so that the fluid can flow in the conveying channel A.

[0065] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A power mechanism for a compression fluid pump, characterized by, The variable container is integrally deformable and is in the form of a bag structure.

2. The power mechanism for a compression-type fluid pump according to claim 1, characterized by, The radial section of the bag structure is in the form of a wave shape, and the stroke direction of the variable container is in the form of a straight line.

3. The power mechanism for a compression-type fluid pump according to claim 2, characterized by, The surface of the variable container is provided with an opening for penetrating connection with the conveying channel, and further comprises a sealing structure for sealing connection between the opening and the conveying channel.

4. The power mechanism for a compression-type fluid pump according to claim 3, characterized by, The reciprocating driving mechanism further comprises a retaining sleeve arranged outside the variable container, and the retaining sleeve is provided with a connecting structure for fixing with the conveying channel.

5. The power mechanism for a compression fluid pump of claim 4, wherein, Further comprising a flange plate with a through hole, the flange plate is detachably connected with the opening through the sealing structure, the sealing structure is in the form of a hole plate, the other end of the flange plate is provided with a cover, and the cover and the flange plate are assembled to realize the penetrating connection in the conveying channel.

6. A positive displacement fluid pump comprising a power mechanism as claimed in any one of claims 4-5, characterized in that, Two single holes are arranged in the flange plate and the sealing structure to form two passages between the flange plate and the sealing structure.

7. The compression fluid pump of claim 6, wherein, One single hole is arranged in the flange plate and the sealing structure to form one passage between the flange plate and the sealing structure, the variable container is further provided with a first conveying port for penetrating the fluid, the cover is provided with a second conveying port, and the first conveying port and the second conveying port are used for connecting the conveying channel.

8. The compression fluid pump of claim 6, wherein, Further comprising two one-way valves arranged between the first conveying port and the second conveying port respectively.

9. The compression fluid pump of claim 8, wherein, ​

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